Mozilla's Art Installation Warns About How Companies Are Using Your Data (2)

Most of us assume no one cares about what we look at on our devices, but the data is being used to create a picture of who we are and where we went — and, for the most part, it's completely legal.

"Privacy is a fundamental right … but the truth of the matter is, it's really about the agreement between the user and the websites they are going to," said Denelle Dixon-Thayer, chief legal and business officer at Mozilla.

One could argue the positives and negatives, but Dixon-Thayer said no matter what, people should be aware of what data they are sharing. However, most people don't read the fine print when they linked their Gmail account to their Google searches, agree to terms and conditions on Apple's iTunes or create an account on Facebook.